Belgium was a relatively minor player in the Second World War, both on land and on the sea. At the start of the war in September 1939, it boasted a merchant fleet of only 472,182 tons – well behind the UK, the undisputed world leader in shipping at the time with 16.6 million tons. In the period of September 1939 to May 1940 before Belgium was invaded by the Germans and the country joined the Allied cause it had already lost close 30,000 tons of shipping to accidents, mines and German torpedoes (even though it was officially neutral).
When Belgium surrendered to the Germans on May 28, 1940 only a small part of its merchant fleet fell into German hands – about 71,000 tons – while the majority – 358,000 tons – continued to serve the Allies. The Germans steadily whittled away at this disadvantage throughout the war so that by the end of the war, only about 108,000 tons of Belgian shipping in Allied control remained afloat. Of the 71,000 tons the Germans had captured, only 21,000 tons managed to survive the war. In the end, only 27% of the Belgian merchant fleet that existed at the start of the war survived to the end.
The sankey chart below provides a breakdown of the status of the Belgian fleet during the course of the war.
Sunken Ships of the Second World War 
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